Method for assembling together of frame sections

ABSTRACT

A process for the fitting of sections, particularly sections for metal carpentry, intended for the building of frames, the section being cut at 45*, comprising the steps of executing on the sections a local recessing of the cage in order to provide the sections with at least one notch and a corresponding number of oriented straps, inserting into each of the sections to be put together a fitting-element of an almost trapezoidal shape provided with at least one snug on the opposite side to the one provided with tenons and slots, the at least one snug serving the purpose of lateral guiding, this same element being also provided with a drilling perpendicular to the miter of the section cut at 45*, drilling to be found on the tenons and slots side and in the longitudinal axis of the section; bringing the at least one snug of the fitting element to the at least one corresponding notch provided on the section, at least one strap serving as guide for the purpose; fitting the sections together by joining the miters, and fitting the tenons and slots of the fitting element already inserted into the cage of a first section, into the slots and tenons of a similar fitting element previously placed in the cage of another section; introducing a tightening part into the drilling made on the two fitting elements, which in this manner prolong each other, and tightening the part into situ.

i 1 July 4,1972

METHOD FOR ASSEMBLING TOGETHER OF FRAME SECTIONS A process for the fitting of sections, particularly sections for ABSTRACT [72] inventor: Lyderic G. Cetulle, Brussels, Belgium metal carpentry, intended for the building of frames, the secg s n I tion being cut at 45, comprising the steps of executing on the [73] Asslgnee' Swmefland sections a local recessing of the cage in order to provide the [22] Filed: March 12, I968 sections with at least one notch and a corresponding number [2|] Appl No: 712,539 of oriented straps, inserting into each of the sections to be put together a fitting-element of an almost trapezoidal shape pro vided with at least one snug on the opposite side to the one n g g lgg provided with tenons and slots, the at least one snug serving n q the purpose of lateral guiding, this same element being also ..29/464, p ded a perpendicular to the mite of the sec (56] Edam CM tion cut at 45, drilling to be found on the tenons and slots side and in the longitudinal axis of the section; bringing the at least UNITED STATES PATENTS one snug of the fitting element to the at least one corresponding notch provided on the section, at least one strap serving as guide for the purpose; fitting the sections together by joining J the miters, and fitting the tenons and slots of the fitting ele- Primary Emmimr john R Campbell ment already inserted into the cage of a first section. into the m C Reiky slots and tenons of a similar fitting element previously placed Attorney-Otto John Mun; in the cage of another section; introducing a tightening part into the drilling made on the two fitting elements, which in this manner prolong each other, and tightening the part into situ.

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sum 09 0F 10 INVENTOR Lyderic Cuiulle BY MW y ATTORNEY PATENTEUJUL 4 m2 sum 10 or 10 nwav roe [ya (rte G (a ull! METHOD FOR ASSEMBLING TOGETHER OF FRAME SECTIONS BACKGROUND OF THE INVENTION Field of the Invention The present invention deals with an operating process and assembling-device for sections in particular metal-sections for metal carpentry made out of light alloys, such as are used in the making of door-frames, window frames and sashes, etc.

DESCRIPTION OF THE PRIOR ART As a general rule, open" or tubular" sections are used and cut at 45 angles; the frame is put together by using two vertical and two horizontal sections which are joined in such a manner that the mitres cut at 45 touch. The sections are then secured according to different methods of assembling.

The term tubular section" defines a section the cage of which is a rectangle in a cross-sectional drawing. An open section defines a section very similar to the tubular section, but one of the large interior surfaces of the cage of an open section" is partially open the whole of its length, so as to form two lateral strips or, fillets lying in a common plane.

The jointing means presently used, generally provide mitresquares fastened on to the sections by means of tighteningscrews, cone-pointed grub screws, etc... These methods do not give satisfying results, in spite of a very firm tightening of the fastening screws. lndeed, it has been noted that a reaction takes place between the straps of the mitre-squares and the jointed sections, which tends to separate the joints.

Neither the fact of providing two different means of fastening for each of the two straps of the mitre-square, nor the various shapes and different ways of orienting these elements have improved results.

Other methods which consist in the use of various fastening elements, other than mine-squares, still present certain inconveniences, such as complicated and costly assembling. Furthermore, these other methods are often hard to fit on narrow-caged sections.

SUMMARY OF THE INVENTION The present invention solves these drawbacks. For instance, only one element is used for the firm and stable fitting of the sections, whether the sections be of the open sections" type, or the tubular sections type, and even if the sections are narrow'caged.

Other advantages will become apparent from the description given hereafter.

The method of the present invention consists essentially in:

practising on the sections a local recessing of the cage, in

such a way that one, or several notches are obtained, as well as a corresponding number of oriented straps, of adequate size; inserting in each of the cages of the sections to be put together, a fitting-element of an almost trapezoidal shape with one or several snugs provided on the side opposite to the side provided with tenons and slots for lateral guiding; the same element also provides, on the tenons and slots side and on the longitudinal axis of the element, for a drilling perpendicular to the mitre cut at a 45 angle, the bight of this fitting-element being such that it will fit easily in cage of a section, whilst the base of the said element, opposed to the notches, is provided with a counter slope;

bringing the snug, or snugs, of the fitting element, to the notch, or notches, made on the section, the strap, or straps serving as guides to this effect;

putting the sections together by joining, side by side, the

mitres, and fitting in this manner the tenons and slots of the fitting element already inserted in the cage of one of the sections, into the tenons and slots of a similar fitting element previously inserted in the cage of a second section; introducing a tightening part into the drilling practised in the two fitting-elements, which in this manner prolong each other, and tightening this part right into situ.

In the case of "open sections," a recessing of the two strips or fillets of the open cage is preferably used, in order to obtain two notches and two oriented straps of adequate shape.

In the case of "tubular sections a recessing is used on one of the large surfaces of the closed cage of the section, in order to define one or two notches and a corresponding number of oriented straps of adequate shape. More than two notches and more than two straps can be provided for, without, however, increasing the quality of the fitting. Furthermore, on the very same surface an axial drilling must be used, of a particular shape, through which will pass the tightening-part of the sections.

The setting of the fitting element into the section is done by bringing the snug, or snugs, of this fitting-element up to the notches, obtained on the section by the local recessing of the oriented straps which serve as guides for the positioning of the fitting-element. Furthermore, due to their shape, orientation and elasticity, these straps keep in place the fitting-elements introduced in the sections. This property is most important, for it is then insured that the fitting-element will not slip out of the section during their handling.

When the full tightening of the fitting element is done, with, for instance, bolts and nuts, rivets or other equivalents, the counterslope provided for at the base of each of the fitting-elements, opposite to the the snug, or snugs, causes the tipping or tilting of this element. In this manner each snug is rendered operational and is made integral with the corresponding notch on the section.

Due to the tensile stress which is imposed by the snugs on the corresponding notches into which they have been introduced, the faces of the mitres cut at 45 angles on the sections, will be in this manner strongly set together as the tightening is increased.

The device of the invention, in the case of metal sections, comprises essentially, an almost trapezoidal shaped element with tenons and slots on one side, with one or several snugs on the opposite side, and a perpendicular piercing the center of the countersloped side which is provided with the tenons and slots. The base of the element is provided with a counter-slope on the side of the tenons and slots, the tenons and slots of a fitting-element going into the tenons and slots of an identical fitting-element.

The height and width of a fitting-element are such that it nestles easily into the cages of the sections to be assembled.

Fitting elements for the same type of sections are identical and, because of their adequate morphology, can be used both on left or right sections.

The fitting-elements are rendered operational and made integral with the section because of their characteristics and by using, in the case of sections with two lateral snugs:

a local recessing, by means of a press, on the two strips or fillets of the cage 0 open sections," which method provides two notches and two adequately oriented straps; a local recessing, by means of a press, on the surface of the tubular sections, overhanging the snugs of the fittingelement, which provides for two notches and two adequately oriented straps, as well as a local and axial drilling enabling the insertion of the tightening-part for the sections to be assembled.

Another advantage offered by the invention is the fact that the same press-tools can be used for the making of the two notches and the two straps, on both the open" and tubular" sections. In this last case, the tools at the same time execute an axial piercing for the insertion of the tightening-part.

The best results are obtained with fitting-elements provided with two lateral snug. In this manner, the same type of fittingelements can be used, both for "open sections," and tubular sections, correlated to specially shaped sections, where the local recessing of the surface of the section can only be made on one particular place; in such cases, one may provide for only one snug on the fitting-element. In such cases, a fittingelement provided with a central snug is used, which is inserted into an axial notch on the section.

In order to expedite production of fitting-elements the sections can be provided with a snug for their entire width. This permits later, after a simple operation of milling, to manufacture sections with lateral snugs, or with a single central snug.

The present invention is hereafter described in the description of the preferred embodiments, with reference to the diagrams enciosed, given without any limitations.

BRIEF DESCRIPTION OF THE DRAWINGS The diagrams respectively represent:

FIG. 1 is a perspective view of two identical fittingelemerits,

FIG. 2 is a view in section of a fitting-element shown in FIGI;

FIGS. 3a to 3d depict the insertion of a fitting-element into a section;

FIG. 4 is a perspective view of "open sections, of fittingelements and of a tightening-part;

FIG. 5 is a view in section, same as in FIG. 4 of the assembly FIG. 6 is a perpective of "tubular sections, fitting-element and tightening-part;

FIG. 7 is a view is section same as in FIG. 6 of the assembly;

FIG. 8 is a view in section, of two sections after assembly, as well as of the tightening-parts before tightening;

FIG. 9 is a view in section, the same as in FIG. 8 after tightening;

FIG. 10 is a view in section of a fitting-element inserted into a section the two arrows showing the tipping or swinging direction of the element;

FIG. 11 is a view in perspective of two identical fitting-elements with different snugs;

FIGS. 13 and 14 are views in perspective and respectively in section of tubular sections and fitting-elements with different snugs.

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows in perspective two identical fitting-elements, I of an almost trapezoidal shape which will have to be set together forming a 45 angle.

One fitting-element provides for two snugs, 2 placed at the opposite base to the one providing the tenons 3 and slots 4. These tenons and slots are built so that they will fit into the slots and tenons of the other element, in order to obtain a lateral guiding which is indispensable to the general assembling operation.

This element is also provided on the tenons and slots side with a drilling 6 perpendicular to the mitres of the sections to be put together, which allows for the insertion of a tighteningpart.

The opposite side to the snugs mentioned, is provided with a counterslope 5 which is intended to cause the tipping or tilting of these elements when the tightening-parts are tightened.

FIG. 2 shows a sectional view of one of the fitting-elements shown in FIG. 1. In this view, the height of the fitting is shown as a function of the height of the cages of the sections.

FIGS. 30 to 3d show section 7 of which the end to be fitted to another section is cut at a 45 angle.

A recessing has been made by means of a press, at a distance of the mitre 8 corresponding to the length of the fitting-element l which provides for a notch 9 and a strap 10.

The fitting-element I inserted into the cage of the section, is of an almost trapezoidal shape and provides for two snugs 2. The greatest height X of this trapezoidal element is slightly smaller than the height of the cage of the section, to allow for an easy insertion of the fitting-element into the cage.

The fitting-element is inserted into the cage of the section. As shown in FIG. 3b the small base is provided with a counterslope 5 sliding on the bottom inside surface of the cage of the section.

At the end of the run, when the back-side of the element provided with tenons 3 and slots 4 comes to the mitre, the side provided with snugs 2 pushes on the strap 10.

As shown in FIG. 30 this initiates a reaction from the strap 10 which causes the element 1 to lift, bringing the snug 2 into the notch 9.

At this stage of the operation shown in FIGv 3d, the fittingelement is in its place and made integral to the section itself during the handlings in the work-shop.

FIG. 4 shows the application of this device in the case of the assembling of two open sections 7 and 7 of which one of the open sides of the cage is provided with two strips or fillets l 1 and 11', the sections being cut at 45 on the sides 8 and 8' to be put together.

On these strips or fillets I1 and 11 a local recessing has been practised, by means of a press, which provides for the straps l0 and 10 and for the notches 9 and 9'.

The fitting-elements are engaged through the frontal snugs 2 and 2' in the direction shown by the arrow, previously indicated in FIGS. 30 to 3d.

The fitting-elements 1 and I are each provided with tenons 3 and 3', slots 4 and 4' and drillings 6 and 6'. These drillings are intended for the insertion of the tightening-parts, i.e. bolts 12 and nuts I2.

The different parts are put together as shown in FIG. 5, so that the mitres 8 and 8 of the sections fit together and consequently, the tenons 3 and slots 4 of the fitting-element already inserted into the cage of the first section fit exactly into the slots 4 and tenons 3' of the similar fitting-element previously inserted into the cage of the second section.

This perfect fitting of the parts will serve the purpose of an indispensable perfect lateral guiding and because of this, the drillings 6 and 6', made on the two fitting-elements and perpendicular to the mitres cut at 45, will be in prolongation one of the other, enabling the insertion of the tightening-parts, i.e. bolts 12 and nuts 12' which will have to be tightened right into situ.

FIGS. 6 and 7 are analogous to FIGS. 4 and 5, and cor respond to the cases of tubular sections I3 and 13' on which have been practised, with the same press as used on the open sections," two central notches 9 and 9' and two straps I0 and 10' on the side under which slide the snugs of the fitting-elements.

Simultaneously with the same press-blow an axial opening has been made at 14 and 14'.

This opening is intended for the insertion of a tighteningpart 12 and 12' for the assemblage operation.

FIGS. 8 and 9 represent a sectional view of the fitting of two section with mitres cut at 45 angles, at the beginning and on completion of the tightening operation.

The counterslope 5 and 5' provided for on the side of the fitting-element opposite to the snugs, causes the tipping or tilting of these elements so as to render the snugs operational 2 and 2' and to make them integral with the notches 9 and 9' provided for on the sections.

The faces of the mitres 8 and 8' of the sections cut at 45", will be brought tightly together as the tightening of the bolt and nut 12 and I2 is gradually increased.

The arrows in FIG. 9 indicate the direction in which the snugs 2 and 2' exert a stress on the edges of the notches 9 and 9', which makes the mitres 8 and 8' definitely integral with each other after the tightening into situ has been accomplished.

FIG. 10 shows the tipping or tilting of a fitting-element around point Y, in the direction indicated by the arrows, at the insertion in its place of the fitting-element.

The stress in the direction indicated by the letter Z sets the fitting-elements against the sections to be put together much tighter, due to the counterslope which favors this movement.

FIG. i1 shows several fittingelements provided with snugs for "open sections" only. The shape of the snugs of thme elements allows for them to be transformed into lateral-snugged elements, as shown see FIG. 1 or axial-snugged elements as shown in FIG. 12 after a simple milling operation.

FIGS. 13 and 14 show the practical use of the fitting-elements shown in FIG. 12. The axial drillings can be clearly distinguished. They are intended to lodge the axial snugs of the fitting-elements.

The methods described above can be modified in certain ways without, however, basically changing the principle of the present invention.

For instance, the lateral guiding may be effected by any equivalent principle involving tenons and slots. Furthermore, the counterslope, at the base of the fitting-element, can be given other shapes and other directions, enabling the snugs to be single integral with the notches during the tightening operation. For this tightening operation, other equivalent elements can be used than bolts and nuts, such as rivets.

The straps made on the cages of the sections can be of different shapes, allowing them to insure the guiding during the placing into position of the fitting-element, particularly where the section can only be recessed in a single place.

I claim:

1. A process for the fitting of sections, particularly sections for metal carpentry, intended for the building of frames, the section being cut at 45, comprising the following steps of:

executing on the section a local recessing of the cage in order to provide the sections with at least one notch and a corresponding number of oriented straps;

inserting into each of the sections to be put together a fitting-element of an almost trapezoidal shape provided with at least one snug on the opposite side to the one pro vided with tenons and slots, the at least one snug serving the purpose of lateral guiding, this same element being also provided with a drilling perpendicular to the mitre of the section cut at 45, drilling to be found on the tenons and slots side and in the longitudinal axis of the section;

bringing the at least one snug of the fitting-element to the at least one corresponding notch provided on the section, at least one strap serving as guides for the purpose;

fitting the sections together by joining the mitres, and fitting the tenorts and slots of the fitting-element already inserted into the cage of a first section, into the slots and tenons of a similar fitting element previously placed in the cage of another section;

introducing a tightening part into the drilling made on the two fitting-elements, which in this manner prolong each other, and tightening the part into situ,

2. A process according to claim 1, comprising the step in the case of open sections, of a recessing of the two strips of the open cage, in order to obtain two notches and two oriented straps.

3. A process according to claim 1, comprising in the case of tubular sections," the step of a recessing on one of the large surfaces of the section, in order to obtain at least one notch and at least one strap, respectively, executing at the same time an axial drilling to allow for the insertion of the tightening piece.

4. A process according to claim 1, said at least one notch being two notches;

said at least one snug being two snugs;

said at least one strap being two straps, respectively.

5. A process according to claim 3, said at least one notch and said at least one strap in said step of recessing being two notches and two straps, respectively. 

1. A process for the fitting of sections, particularly sections for metal carpentry, intended for the building of frames, the section being cut at 45*, comprising the following steps of: executing on the section a local recessing of the cage in order to provide the sections with at least one notch and a corresponding number of oriented straps; inserting into each of the sections to be put together a fitting-element of an almost trapezoidal shape provided with at least one snug on the opposite side to the one provided with tenons and slots, the at least one snug serving the purpose of lateral guiding, this same element being also provided with a drilling perpendicular to the mitre of the section cut at 45*, drilling to be found on the tenons and slots side and in the longitudinal axis of the section; bringing the at least one snug of the fitting-element to the at least one corresponding notch provided on the section, at least one strap serving as guides for the purpose; fitting the sections together by joining the mitres, and fitting the tenons and slotS of the fitting-element already inserted into the cage of a first section, into the slots and tenons of a similar fitting element previously placed in the cage of another section; introducing a tightening part into the drilling made on the two fitting-elements, which in this manner prolong each other, and tightening the part into situ.
 2. A process according to claim 1, comprising the step in the case of ''''open sections,'''' of a recessing of the two strips of the open cage, in order to obtain two notches and two oriented straps.
 3. A process according to claim 1, comprising in the case of ''''tubular sections,'''' the step of a recessing on one of the large surfaces of the section, in order to obtain at least one notch and at least one strap, respectively, executing at the same time an axial drilling to allow for the insertion of the tightening piece.
 4. A process according to claim 1, said at least one notch being two notches; said at least one snug being two snugs; said at least one strap being two straps, respectively.
 5. A process according to claim 3, said at least one notch and said at least one strap in said step of recessing being two notches and two straps, respectively. 